$OpenBSD: patch-ash_display_mirror_window_controller_cc,v 1.2 2015/07/24 07:29:52 robert Exp $
--- ash/display/mirror_window_controller.cc.orig.port	Wed Jul 22 15:29:18 2015
+++ ash/display/mirror_window_controller.cc	Fri Jul 24 09:24:20 2015
@@ -257,7 +257,11 @@ void MirrorWindowController::UpdateWindow(
                          return info.id() == iter->first;
                        }) == display_info_list.end()) {
         CloseAndDeleteHost(iter->second, true);
+#if defined(__llvm__)
+        mirroring_host_info_map_.erase(iter++);
+#else
         iter = mirroring_host_info_map_.erase(iter);
+#endif
       } else {
         ++iter;
       }
